/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemBlueprintLibrary.h
Copies targets from HandleToAdd to TargetHandle
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Ability|TargetData") static [FGameplayAbilityTargetDataHandle](API\Plugins\GameplayAbilities\Abilities\FGameplayAbilityTargetDataHandle) AppendTargetDataHandle ( [FGameplayAbilityTargetDataHandle](API\Plugins\GameplayAbilities\Abilities\FGameplayAbilityTargetDataHandle) TargetHandle, const [FGameplayAbilityTargetDataHandle](API\Plugins\GameplayAbilities\Abilities\FGameplayAbilityTargetDataHandle) & HandleToAdd )